TikTok CEO pledges $2B for child safety. 

Senate hearing focuses on kids' protection. 

TikTok aims to enhance platform security. 

CEO commits to safeguarding young users. 

Pledge follows Senate child safety concerns.

$2B initiative to address safety issues. 

TikTok emphasizes commitment to children. 

CEO vows to prioritize platform well-being. 

Senate plays key role in child safety debate. 

TikTok's $2B promise resonates in Senate. 

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